Create persistence address book.

app/scripts/controllers/address-book.js

@@ -0,0 +1,46 @@
+const ObservableStore = require('obs-store')
+const extend = require('xtend')
+
+class AddressBookController {
+
+  constructor (opts = {}) {
+    const initState = extend({
+      addressBook: [],
+    }, opts.initState)
+    this.store = new ObservableStore(initState)
+  }
+
+  //
+  // PUBLIC METHODS
+  //
+
+  setAddressList (address, name) {
+    return this.addToAddressList(address, name)
+    .then((addressBook) => {
+      this.store.updateState({
+        addressBook,
+      })
+      return Promise.resolve()
+    })
+  }
+
+  addToAddressList (address, name) {
+    let addressBook = this.getAddressList()
+    let index = addressBook.findIndex((element) => { return element.address === address })
+    if (index !== -1) {
+      addressBook.splice(index, 1)
+    }
+    addressBook.push({
+      address,
+      name,
+    })
+    return Promise.resolve(addressBook)
+  }
+
+  getAddressList () {
+    return this.store.getState().addressBook
+  }
+
+}
+
+module.exports = AddressBookController

app/scripts/metamask-controller.js

@@ -15,6 +15,7 @@ const PreferencesController = require('./controllers/preferences')
 const CurrencyController = require('./controllers/currency')
 const NoticeController = require('./notice-controller')
 const ShapeShiftController = require('./controllers/shapeshift')
+const AddressBookController = require('./controllers/address-book')
 const MessageManager = require('./lib/message-manager')
 const PersonalMessageManager = require('./lib/personal-message-manager')
 const TxManager = require('./transaction-manager')
@@ -50,6 +51,11 @@ module.exports = class MetamaskController extends EventEmitter {
       initState: initState.PreferencesController,
     })
 
+    // address book controller
+    this.addressBookController = new AddressBookController({
+      initState: initState.AddressBookController,
+    })
+
     // currency controller
     this.currencyController = new CurrencyController({
       initState: initState.CurrencyController,
@@ -124,6 +130,9 @@ module.exports = class MetamaskController extends EventEmitter {
     this.preferencesController.store.subscribe((state) => {
       this.store.updateState({ PreferencesController: state })
     })
+    this.addressBookController.store.subscribe((state) => {
+      this.store.updateState({ AddressBookController: state })
+    })
     this.currencyController.store.subscribe((state) => {
       this.store.updateState({ CurrencyController: state })
     })
@@ -142,6 +151,7 @@ module.exports = class MetamaskController extends EventEmitter {
     this.personalMessageManager.memStore.subscribe(this.sendUpdate.bind(this))
     this.keyringController.memStore.subscribe(this.sendUpdate.bind(this))
     this.preferencesController.store.subscribe(this.sendUpdate.bind(this))
+    this.addressBookController.store.subscribe(this.sendUpdate.bind(this))
     this.currencyController.store.subscribe(this.sendUpdate.bind(this))
     this.noticeController.memStore.subscribe(this.sendUpdate.bind(this))
     this.shapeshiftController.store.subscribe(this.sendUpdate.bind(this))
@@ -219,6 +229,7 @@ module.exports = class MetamaskController extends EventEmitter {
       this.personalMessageManager.memStore.getState(),
       this.keyringController.memStore.getState(),
       this.preferencesController.store.getState(),
+      this.addressBookController.store.getState(),
       this.currencyController.store.getState(),
       this.noticeController.memStore.getState(),
       // config manager

ui/app/reducers/metamask.js

@@ -19,6 +19,7 @@ function reduceMetamask (state, action) {
     noActiveNotices: true,
     lastUnreadNotice: undefined,
     frequentRpcList: [],
+    addressBook: [],
   }, state.metamask)
 
   switch (action.type) {